明朝成化年(nián )间，朝纲(gāng )腐败，奸邪当道。西(xī )厂东厂(chǎng )为宦官把(bǎ )持，混淆黑白，陷害忠(zhōng )良(liáng )，朝野内(nèi )外(wài )噤若寒蝉。时有赵(zhào )怀安（李连杰 饰）等流亡(wáng )剑客挺身(shēn )而出，接连铲除东厂数名奸佞，致令阉贼胆战心惊。适值此(cǐ )时，风头(tóu )正劲的西厂